I agree "some of the revenues" is not clear, but it looks to be far from "most of the revenues"...
some and most are fuzzy terms. And the required money to fund new hardware development or other strategic operations mainly determines the difference between some and most. If ASICMINER is very profitable, "some" may be enough. Just saying...
I guess the difference between "some" and "most" depends on BFL delivering any time soon. Without BFL machines hashing we will be a much larger portion of the hashrate (even with Avalon and/or bASIC delivering) than after BFL has delivered on all their pre-orders and therefore have more profits to divide/keep within the business.
I also do agree with you that future investments come with a high risk as they might yield zero returns.
First things first: I want to see the hashrate rising as a result of ASICMINER mining
